BATON ROUGE, La. -- A Louisiana professor says he is being wrongly targeted by conservative activists who released video excerpts of a lecture on climate change.

CampusReform.org, a student group launched by the conservative Leadership Institute in Arlington, Va., has circulated video online of the professor telling students who don't believe in taking steps to end global warming that "blood will be your hands."

The video shows less than two minutes of excerpts from the lecture at Louisiana State University. Astronomy professor Bradley Schaefer said Wednesday the lecture was nearly an hour long.

Schaefer said the clips misrepresent his point. He said his comments were aimed at provoking discussion about climate change policy and that he gave equal criticism to students with other points of view. "What I was doing was very intentional. I was posing all sides of how to handle global warming, and I was challenging all sides of it, too," Schaefer told The Associated Press.

The dean of LSU's College of Science, Kevin Carman, said no student has complained about the lecture and no action will be taken against Schaefer, who Carman called a "spirited professor" with consistently positive student reviews.

Arlington, VA – CampusReform.org, a network of conservative and libertarian student activists, acquired video of a Louisiana State University astronomy professor who seated students by their political views on global warming in class and then openly mocked conservative students. The first of three videos was released today.

In the video, Professor Bradley Schaeffer tells students who support limited government regulation for global warming that “blood will be on your hands” because of their political opinions.